Electronics Forum | Thu Jan 25 09:52:51 EST 2007 | chrisgriffin
Force is definetely necessary. It really doesn't have much to do with board thinckness, if everything is programmed correctly. It is just the downward pressure applied to the stencil during printing. You are supposed to adjust this depending on yo
Electronics Forum | Fri Sep 17 09:31:17 EDT 2004 | russ
Step stencils are used but only when necessary. One reason to use one would be a PCB with 12 mil pitch and very large coils or something of that nature. The 12 mil pitch part would require a 4 mil thick stencil to ensure release while it would caus
Electronics Forum | Sat Nov 13 14:09:45 EST 1999 | se
First, let me say what I always say: a good chem-etched stencil will print fine pitch. Chem-etch brings trap to the side walls because its a physical by-product of the process. Because they are less expensive you can add electropolish and still save
Electronics Forum | Thu Sep 20 09:12:28 EDT 2001 | jschake
If you were successful in running the machine in dry cycle mode, then I would expect with new squeegees that the prints would be acceptable. To give you more tangible data on what you may expect from the actual print results, maybe you could run the
Electronics Forum | Thu Oct 17 17:18:48 EDT 2002 | Leandro G. Barajas
Hi everybody, This is a simple posting to initiate a discussion on different ways to troubleshoot, improve, and control the Stencil Printing Process SPP in SMT manufacturing. There are many SPC, ANOVA and other analysis techniques that provide insi
Electronics Forum | Thu Feb 12 20:36:26 EST 1998 | Jon Medernach
| Using metal squeegees on GSPs has caused premature stencil wear. Has | anyone had any success with this combination? How much snap off did you | use? We are using .5 mm pitch and have a no clean process. Stencil wear is is minimal but exists. T
Electronics Forum | Thu Jul 22 17:30:53 EDT 2021 | proceng1
SWAP blades from front to back. Make sure the tooling/ board supports are arranged correctly. Is this a foil stencil on a frame, or a complete framed stencil? I've had worn out foils that "roll" with the blade in one direction worse than the other.
Electronics Forum | Thu Jun 25 21:13:11 EDT 1998 | Phillip Hunter
| looking for help with fine-pitch printing for what would be the best settings for printing speed, squeegee pressure, seperation speed. | thanks for you time Print speed is determined by your aperture dimensions, paste viscosity type of blade (metal
Electronics Forum | Fri Oct 16 14:01:22 EDT 1998 | Justin Medernach
| I AM LOOKING FOR INFORMATION ON A WAY TO REPAIR STENCIL FIDUCIALS TO KEEP THEM SOLID AND AS DARK AS POSSIBLE.SOMETING THAT WOULD BE MORE OF A PERMANENT SOLUTION,I HAVE USED PERMANENT INK BUT IT EVENTUALY WIPES OFF OR FADES... | Don't laugh, this w
Electronics Forum | Fri May 27 14:24:18 EDT 2005 | james
We are currently having problems with our SPM AV Screen printer. It is an intermitant problem, sometimes it will make a loud noise as the stencil is going down on top of the board and sometimes it does not meet its destination. Sometimes the machi
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